Somewhat reduced oil for a few weeks, and then it stopped working. -Initial outbreak in places I have never gotten pimples
-Terrible cystic acne all over my chin
-Messed up my hormones so much that my period started coming every 6-8 weeks I use this site a lot and have never felt compelled to write a review before, but I want to for B5 because while I think this obviously works wonderfully for many people, I think those with hormonal, cystic acne should be warned. My first month on this I had somewhat of an initial outbreak, but they were small pimples and I was fine with it. However, I did notice that my period came two weeks late, which has never happened to me before. In my second month, I broke out with 6-7 cystic pimples at a time (this has NEVER happened to me...I usually have 3-4 in a year) and my period once again came two weeks late. After three months, I quit because things were not getting better and I was three weeks late for my period and decided to start Accutane (b5 was my last resort before I started Accutane). I am 31 with hormonal acne (never had much acne as a teen or early 20's), so please do plenty of research if you are also in your late 20's/ early 30's and have similar symptoms.